re: setting DDB_COMMANDONENTER="bt" by default

[matthew green <mrg%eterna.com.au@localhost>]

Valery Ushakov writes:
> On Thu, Feb 15, 2018 at 01:19:31 +0000, Sevan Janiyan wrote:
> 
> > > I might/would suggest
> > > 
> > >    OPTIONS DDB_ONPANIC=2
> > 
> > clear, any reason not to have this as a default? (I'm going to sleep on it)
> 
> As someone has already mentioned upthread, because printing a
> backtrace might cause another panic, so the default was selected to be
> on the safe(r) side.  At least that's what I recall.

i don't think this is the case.

the builtin stack trace code is fault-tolerant.  if it
faults, it will not re-try and you'll get a db> prompt.

AFAIR, this support was added and the default left alone,
not beacuse the old/current default is right, but that
there was pushback from people who wanted the old style.


.mrg